/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.cloud.ai.example.helloworld;

import java.util.Objects;

import reactor.core.publisher.Flux;

import org.springframework.ai.chat.client.ChatClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/ai")
public class ChatController {

	private final ChatClient chatClient;

	public ChatController(ChatClient.Builder builder) {
		this.chatClient = builder.build();
	}

	@GetMapping("/chat")
	public String chat(String input) {
		return this.chatClient.prompt().user(input).call().content();
	}

	@GetMapping("/stream")
	public String stream(String input) {

		Flux<String> content = this.chatClient.prompt().user(input).stream().content();
		return Objects.requireNonNull(content.collectList().block()).stream().reduce((a, b) -> a + b).get();
	}

}
